This is very cute! It is also, however, basically too dark. The shadows are quite deep and extensive, this looks like it was shot almost at night which is surely not the impression you want to give. If you can pull it up lighter, and open the shadows up quite bit, you might have something here. I am concerned since the child's eyes are so dark and shadowed, you might be unable to pull any more detail out there, and that's never going to look good.
The eyes are the most important thing in a portrait, neurologically we're wired to look at them and try to "read" them in a bunch of ways, so getting them right is huge.